Describe how the united states became involved in the conflict in korea section 2 assessment

The conflict in Korea began with communist northern Korea invading the southern region, which wasn't communist. the U.S. despises communism and believes in the Domino theory: If one country falls to communism, so will another, then another, etc. The u.s. feared all of Korea would fall to communism, and then Japan, so they aided the non-communist south